Load line analysis for RF power amps

The most basic of analyses is the load line analysis for RF power amps ( or for that matter, any power amp). It is true that we all learned this in our formative years. However, it is equally true that we graduated to high performance complicated CAD programs that do so many things in an invisible manner that we no longer want to know ( sometimes) how the tool go to where it got to. A somewhat similar condition is common in digital ASIC design where the designer no longer needs to know how the logic gate works or what its device level parameters are. He or she simply writes the code that enables the design on a high level of abstraction. A brief expose of load line analysis is presented in a newly released paper by SPG and may be found at www.signalpro.biz under engineer's corner for interested readers.